@Kevin_Z 1. Provider's "modem" connects to the Deco unit via an ethernet cable then another cable connects deco unit 1 to a switch then from that switch it goes via ethernet to deco unit 2 and some...

Can anyone maybe help? Either i'm going crazy or routers seems to work worse every day....

After firmware upgrade to 1.1.0 Build 20190620 Rel. 45372 i'm having disconnection issues and after it happens Ethernet port locks itself to 100 mbps, after i remove and reattach the cable it returns...